Updating one to one doctrine2
To initiate a transaction to actually perform the insertion, You have to explicitly call flush() on the Entity Manager.
This distinction between persist and flush is allows to aggregate all writes (INSERT, UPDATE, DELETE) into one single transaction, which is executed when flush is called.
An entity class must not be final or contain final methods.
Additionally it must not implement clone nor wakeup, unless it does so safely. A persistable property is an instance variable of the entity that is saved into and retrieved from the database by Doctrine’s data mapping capabilities.
This doesn’t mean persistence is downplayed by Doctrine 2, however it is our belief that there are considerable benefits for object-oriented programming if persistence and entities are kept separated.You can read up on the configuration details in the reference chapter on configuration.The third block shows the configuration options required to connect to a database, in my case a file-based sqlite database.The metadata language describes how entities, their properties and references should be persisted and what constraints should be applied to them.Metadata for entities are configured using a XML, YAML or Docblock Annotations.